Identify the body cavity in which each of the described activities takes place.
Blood within veins gives up carbon dioxide and picks up oxygen:

Food is digested and its nutrients are absorbed:

A human baby develops before it is born:

the answer is c) an oak tree

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above